We are a family of 4 and we booked our flight tickets for Zurich this July . We want to stay in Freiburg but we but we also want to visit other places as well. For example we want to go to Lucern, Lake Constance, Basel, Colmar and europa park ... Could you please advise us which is the best and cheapest way to go to these places ? Is it by car by train or by tour bus . Also for the train ticket (I know there are trains going to Lucern and Basel ) is there a special price for families going there for a day trip ?And can you advise which other places near Freiburg is worth going to ?